South Dakota DOT Regulations for Oversize/Overweight Load Flags/Banners/Signs/Lights, Running Hours and Holiday Restrictions

Running Hours and Holiday Restrictions

Movement permitted one-half hour before sunrise to one-half hour after sunset, including Saturday and Sunday. Loads that are only overweight may operate 24/7. Loads not exceeding 10′ wide, 14’6″ high, 110′ overall length may travel on interstate highways continuously.

"Oversized Load" Banner Regulations and Requirements

“Oversize Load” signs are required front and rear on all permit vehicles that exceed a width of 12' or a length of 95'. Size: 7' Long, 18" high Letters" 10" high, 1 3/8" brushstroke Background: Yellow

Flag Requirements

Flags required on all corners of vehicles or loads wider than 8’6” and on the load extending beyond the width of the hauling vehicle, and load front projections exceeding 3', or more than 4' beyond the rear of the trailer. Flags are required for front and rear projections of 2' or more: 1 flag if less than 2' wide, two flags if wider than 2'. 

Warning Lights: Color and Placement

For night operations: for loads extending 4" or more, one or more amber lamps and reflectors on the forward extremities of the load, and one or more red lamps and reflectors visible from the rear and side. One or more amber lamps and reflectors visible from the front, side and rear, marking any portion of the projecting load that extends beyond its foremost and rearmost edge. Amber lamps and reflectors visible from the front, side and rear, marking any portion of the projecting load which extends beyond its foremost and rearmost edge, including projections.

Source of Information:

The South Dakota Oversize/Overweight Permit Manual

https://www.ok.gov/dps/Administrative_Rules/Size_and_Weight_Permits/Size_and_Weight_Permit_Load/

What is considered as "Oversized Load" in South Dakota?

DIMENSIONS: Width: 8' 6" Height: 14' Overall length not limited' Maximum Length-trailer: 53'' Overhang: Front 3', Rear 4' WEIGHTS: Single Axle: 20,000 lb. Tandem axle: 34,000 lb. Tridem: 42,000 lb. Max Gross Weight: 80,000 lb.

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